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Mirrors > Home > MPE Home > Th. List > oppgsubg | Structured version Visualization version GIF version |
Description: Being a subgroup is a symmetric property. (Contributed by Mario Carneiro, 17-Sep-2015.) |
Ref | Expression |
---|---|
oppggic.o | ⊢ 𝑂 = (oppg‘𝐺) |
Ref | Expression |
---|---|
oppgsubg | ⊢ (SubGrp‘𝐺) = (SubGrp‘𝑂) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | subgrcl 18415 | . . 3 ⊢ (𝑥 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp) | |
2 | subgrcl 18415 | . . . 4 ⊢ (𝑥 ∈ (SubGrp‘𝑂) → 𝑂 ∈ Grp) | |
3 | oppggic.o | . . . . 5 ⊢ 𝑂 = (oppg‘𝐺) | |
4 | 3 | oppggrpb 18617 | . . . 4 ⊢ (𝐺 ∈ Grp ↔ 𝑂 ∈ Grp) |
5 | 2, 4 | sylibr 237 | . . 3 ⊢ (𝑥 ∈ (SubGrp‘𝑂) → 𝐺 ∈ Grp) |
6 | 3 | oppgsubm 18621 | . . . . . . 7 ⊢ (SubMnd‘𝐺) = (SubMnd‘𝑂) |
7 | 6 | eleq2i 2825 | . . . . . 6 ⊢ (𝑥 ∈ (SubMnd‘𝐺) ↔ 𝑥 ∈ (SubMnd‘𝑂)) |
8 | 7 | a1i 11 | . . . . 5 ⊢ (𝐺 ∈ Grp → (𝑥 ∈ (SubMnd‘𝐺) ↔ 𝑥 ∈ (SubMnd‘𝑂))) |
9 | eqid 2739 | . . . . . . . . 9 ⊢ (invg‘𝐺) = (invg‘𝐺) | |
10 | 3, 9 | oppginv 18618 | . . . . . . . 8 ⊢ (𝐺 ∈ Grp → (invg‘𝐺) = (invg‘𝑂)) |
11 | 10 | fveq1d 6689 | . . . . . . 7 ⊢ (𝐺 ∈ Grp → ((invg‘𝐺)‘𝑦) = ((invg‘𝑂)‘𝑦)) |
12 | 11 | eleq1d 2818 | . . . . . 6 ⊢ (𝐺 ∈ Grp → (((invg‘𝐺)‘𝑦) ∈ 𝑥 ↔ ((invg‘𝑂)‘𝑦) ∈ 𝑥)) |
13 | 12 | ralbidv 3110 | . . . . 5 ⊢ (𝐺 ∈ Grp → (∀𝑦 ∈ 𝑥 ((invg‘𝐺)‘𝑦) ∈ 𝑥 ↔ ∀𝑦 ∈ 𝑥 ((invg‘𝑂)‘𝑦) ∈ 𝑥)) |
14 | 8, 13 | anbi12d 634 | . . . 4 ⊢ (𝐺 ∈ Grp → ((𝑥 ∈ (SubMnd‘𝐺) ∧ ∀𝑦 ∈ 𝑥 ((invg‘𝐺)‘𝑦) ∈ 𝑥) ↔ (𝑥 ∈ (SubMnd‘𝑂) ∧ ∀𝑦 ∈ 𝑥 ((invg‘𝑂)‘𝑦) ∈ 𝑥))) |
15 | 9 | issubg3 18428 | . . . 4 ⊢ (𝐺 ∈ Grp → (𝑥 ∈ (SubGrp‘𝐺) ↔ (𝑥 ∈ (SubMnd‘𝐺) ∧ ∀𝑦 ∈ 𝑥 ((invg‘𝐺)‘𝑦) ∈ 𝑥))) |
16 | eqid 2739 | . . . . . 6 ⊢ (invg‘𝑂) = (invg‘𝑂) | |
17 | 16 | issubg3 18428 | . . . . 5 ⊢ (𝑂 ∈ Grp → (𝑥 ∈ (SubGrp‘𝑂) ↔ (𝑥 ∈ (SubMnd‘𝑂) ∧ ∀𝑦 ∈ 𝑥 ((invg‘𝑂)‘𝑦) ∈ 𝑥))) |
18 | 4, 17 | sylbi 220 | . . . 4 ⊢ (𝐺 ∈ Grp → (𝑥 ∈ (SubGrp‘𝑂) ↔ (𝑥 ∈ (SubMnd‘𝑂) ∧ ∀𝑦 ∈ 𝑥 ((invg‘𝑂)‘𝑦) ∈ 𝑥))) |
19 | 14, 15, 18 | 3bitr4d 314 | . . 3 ⊢ (𝐺 ∈ Grp → (𝑥 ∈ (SubGrp‘𝐺) ↔ 𝑥 ∈ (SubGrp‘𝑂))) |
20 | 1, 5, 19 | pm5.21nii 383 | . 2 ⊢ (𝑥 ∈ (SubGrp‘𝐺) ↔ 𝑥 ∈ (SubGrp‘𝑂)) |
21 | 20 | eqriv 2736 | 1 ⊢ (SubGrp‘𝐺) = (SubGrp‘𝑂) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 209 ∧ wa 399 = wceq 1542 ∈ wcel 2114 ∀wral 3054 ‘cfv 6350 SubMndcsubmnd 18084 Grpcgrp 18232 invgcminusg 18233 SubGrpcsubg 18404 oppgcoppg 18604 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2020 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2162 ax-12 2179 ax-ext 2711 ax-sep 5177 ax-nul 5184 ax-pow 5242 ax-pr 5306 ax-un 7492 ax-cnex 10684 ax-resscn 10685 ax-1cn 10686 ax-icn 10687 ax-addcl 10688 ax-addrcl 10689 ax-mulcl 10690 ax-mulrcl 10691 ax-mulcom 10692 ax-addass 10693 ax-mulass 10694 ax-distr 10695 ax-i2m1 10696 ax-1ne0 10697 ax-1rid 10698 ax-rnegex 10699 ax-rrecex 10700 ax-cnre 10701 ax-pre-lttri 10702 ax-pre-lttrn 10703 ax-pre-ltadd 10704 ax-pre-mulgt0 10705 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2075 df-mo 2541 df-eu 2571 df-clab 2718 df-cleq 2731 df-clel 2812 df-nfc 2882 df-ne 2936 df-nel 3040 df-ral 3059 df-rex 3060 df-reu 3061 df-rmo 3062 df-rab 3063 df-v 3402 df-sbc 3686 df-csb 3801 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4222 df-if 4425 df-pw 4500 df-sn 4527 df-pr 4529 df-tp 4531 df-op 4533 df-uni 4807 df-iun 4893 df-br 5041 df-opab 5103 df-mpt 5121 df-tr 5147 df-id 5439 df-eprel 5444 df-po 5452 df-so 5453 df-fr 5493 df-we 5495 df-xp 5541 df-rel 5542 df-cnv 5543 df-co 5544 df-dm 5545 df-rn 5546 df-res 5547 df-ima 5548 df-pred 6139 df-ord 6186 df-on 6187 df-lim 6188 df-suc 6189 df-iota 6308 df-fun 6352 df-fn 6353 df-f 6354 df-f1 6355 df-fo 6356 df-f1o 6357 df-fv 6358 df-riota 7140 df-ov 7186 df-oprab 7187 df-mpo 7188 df-om 7613 df-tpos 7934 df-wrecs 7989 df-recs 8050 df-rdg 8088 df-er 8333 df-en 8569 df-dom 8570 df-sdom 8571 df-pnf 10768 df-mnf 10769 df-xr 10770 df-ltxr 10771 df-le 10772 df-sub 10963 df-neg 10964 df-nn 11730 df-2 11792 df-ndx 16602 df-slot 16603 df-base 16605 df-sets 16606 df-ress 16607 df-plusg 16694 df-0g 16831 df-mgm 17981 df-sgrp 18030 df-mnd 18041 df-submnd 18086 df-grp 18235 df-minusg 18236 df-subg 18407 df-oppg 18605 |
This theorem is referenced by: lsmmod2 18933 lsmdisj2r 18942 |
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